Home / 3,920.07-5,410.43-2,974.19

Finding the Fourth Proportional to 3,920.07, 5,410.43 and 2,974.19

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Solution

The fourth proportional to 3,920.07, 5,410.43 and 2,974.19 is: 4,104.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.07 : 5,410.43 = 2,974.19 : x
  2. Step 2: Convert to fraction form
    3,920.07/5,410.43 = 2,974.19/x
  3. Step 3: Cross multiply
    3,920.07x = 5,410.43 × 2,974.19
  4. Step 4: Simplify right side
    3,920.07x = 16,091,646.80
  5. Step 5: Solve for x
    x = 16,091,646.80/3,920.07
  6. Step 6: Final answer
    x = 4,104.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.